A vehicle power system includes a coil that, in a first operational mode, receives power wirelessly from an external source, a first battery connected to the coil to receive power transferred from the coil while the coil is in the first operational mode, a second battery that receives power from the first battery, and a switch that switches the coil between the first operational mode and a second operational mode in which the coil receives power from the second battery and wirelessly transfers power from the second battery to an electrical load in the vehicle.
Legal claims defining the scope of protection, as filed with the USPTO.
3. The vehicle power system of claim 2, wherein the first operational mode position utilizes a larger portion of the coil than the second operational mode position.
4. The vehicle power system of claim 1, wherein the first battery has a higher voltage output than the second battery.
5. The vehicle power system of claim 1, further comprising an AC/DC converter to convert power transferred from the coil to the first battery.
7. The vehicle power system of claim 6, wherein the three-port converter includes an isolated half-bridge push-pull converter with a clamping circuit connected between the first battery and the second battery, and a full-bridge topology between the second battery and the coil.
8. The vehicle power system of claim 1, the first battery and the second battery are both charged by the coil when the coil is in the first operational mode.
9. The vehicle power system of claim 1, wherein the electrical load is one or more of a sensor, a camera, a GPS device, or a mobile computing device.
10. The vehicle power system of claim 1, wherein the coil is vertically disposed in a rear section of the vehicle.
11. The vehicle power system of claim 1, wherein the coil and a receiver of the electrical load are aligned in a position along an axis that does not pass through a passenger seating space inside the vehicle.
14. The method of claim 12, wherein a larger portion of the coil is utilized in the first operational mode than in the second operational mode.
15. The method of claim 12, wherein a higher voltage is output from the first battery than from the second battery.
16. The method of claim 12, further comprising converting power transferred from the coil to the first battery from AC to DC power.
18. The method of claim 12, wherein both the first battery and the second battery are charged by the coil when the coil is in the first operational mode.
19. The method of claim 12, wherein the coil is disposed vertically in a rear section of the vehicle.
20. The method of claim 12, wherein the coil and a receiver of the electrical load are aligned along an axis that does not pass through a passenger seating space inside the vehicle.
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February 2, 2021
February 28, 2023
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